Structural Engineering and Mechanics

  • 제32권4호
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  • Pages.517-529
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  • 2009
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Vibration mitigation of guyed masts via tuned pendulum dampers

  • Lacarbonara, Walter (Dipartimento di Ingegneria Strutturale e Geotecnica,Sapienza University of Rome) ;
  • Ballerini, Stefano (Dipartimento di Ingegneria Strutturale e Geotecnica,Sapienza University of Rome)
  • 투고 : 2007.06.09
  • 심사 : 2009.05.23
  • 발행 : 2009.07.10
⟨ 이전 논문 다음 논문 ⟩

초록

A passive vibration mitigation architecture is proposed to damp transverse vibrations of guyed masts. The scheme is based on a number of pendula attached to the mast and tuned to the vibration modes to be controlled. This scheme differs from the well-known autoparametric pendulum absorber system. The equations of motion of the guyed mast with an arbitrary number of pendula are obtained. The leading bending behaviour of a typical truss mast is described by an equivalent beam model whereas the guys are conveniently modeled as equivalent transverse springs whose stiffness comprises the elastic and geometric stiffness. By assuming a mast with an inertially and elastically isotropic cross-section, a planar model of the guyed mast is investigated. The linearization of the equations of motion of the mast subject to a harmonic distributed force leads to the transfer functions of the structure without the dampers and with the dampers. The transfer functions allow to investigate the mitigation effects of the pendula. By employing one pendulum only, tuned to the frequency of the lowest mode, the effectiveness of the passive vibration potential in reducing the motion and acceleration of the top section of the mast is demonstrated.

키워드

참고문헌

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피인용 문헌

  1. Modified pendular vibration absorber for structures under base excitation vol.66, pp.2, 2009, https://doi.org/10.12989/sem.2018.66.2.161
  2. Exploration of the Nonlinear Effect of Pendulum Tuned Mass Dampers on Vibration Control vol.147, pp.8, 2021, https://doi.org/10.1061/(asce)em.1943-7889.0001961